CVE-2026-3800
Published: 09 March 2026
Summary
CVE-2026-3800 is a medium-severity Improper Access Control (CWE-284) vulnerability in Oretnom23 Resort Reservation System. Its CVSS base score is 6.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 12.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
This control enforces ownership-based restrictions on portable storage device use, directly implementing access control over media insertion into organizational systems.
Hardware write-protect enforces access control on critical resources (e.g., firmware) independent of software state.
The access control policy and procedures directly mandate and enforce proper access control mechanisms across the organization.
Device lock enforces restricted access until re-authentication, directly reducing unauthorized use of active sessions.
Supervision and review of access control activities directly detects and remediates improper access configurations or usages.
Explicitly identifying and documenting actions permitted without identification or authentication enforces proper access control boundaries by defining justified exceptions.
By automatically labeling outputs with security attributes, the control supports attribute-based enforcement and reduces exploitability of improper access control weaknesses.
Associating and retaining security attributes with data directly supports enforcement of access control decisions across storage, processing, and transmission.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unrestricted file upload in public-facing PHP web app directly enables remote exploitation for initial access (T1190) and facilitates arbitrary web shell deployment for persistence (T1505.003).
NVD Description
A vulnerability has been found in SourceCodester/janobe Resort Reservation System 1.0. Affected is the function doInsert of the file /controller.php?action=add. Such manipulation of the argument image leads to unrestricted upload. The attack can be executed remotely. The exploit has been…
more
disclosed to the public and may be used.
Deeper analysisAI
CVE-2026-3800 is a vulnerability in SourceCodester/janobe Resort Reservation System 1.0 that enables unrestricted file upload. The issue resides in the doInsert function of the file /controller.php?action=add, where manipulation of the image argument allows attackers to upload files without restrictions. It is associated with CWEs-284 (Improper Access Control) and CWE-434 (Unrestricted Upload of File with Dangerous Type), and carries a CVSS v3.1 base score of 6.3.
The vulnerability is exploitable remotely over the network with low attack complexity and no user interaction required. Exploitation demands low privileges (PR:L) from the attacker, resulting in low impacts to confidentiality, integrity, and availability in an unchanged scope (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L). A successful attack allows unauthorized file uploads, potentially enabling further compromise depending on the uploaded content.
Advisories referenced in VulDB entries (ctiid.349767, id.349767, submit.768978, submit.768998) and a GitHub disclosure at xiahao90/CVEproject detail the vulnerability, with the exploit publicly available and noted as usable. No specific patches or mitigations are described in the provided information.
Details
- CWE(s)